<template>
  <div style="display: flex;background-color: white;">
    <hamburger
      :toggle-click="toggleSideBar"
      :is-active="sidebar.opened"
      class="hamburger-container"
    />

    <el-breadcrumb class="app-breadcrumb" separator="/">
      <transition-group name="breadcrumb">
        <el-breadcrumb-item v-for="(item, index) in levelList" :key="item.path">
          <span
            v-if="
              item.redirect === 'noredirect' || index == levelList.length - 1
            "
            class="no-redirect"
            >{{ item.meta.title }}</span
          >
          <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
        </el-breadcrumb-item>
      </transition-group>
    </el-breadcrumb>
  </div>
</template>

<script>
import pathToRegexp from "path-to-regexp";
import Hamburger from "@/components/Hamburger";
import { mapGetters } from "vuex";

export default {
  components: {
    Hamburger
  },
  computed: {
    ...mapGetters(["sidebar"])
  },
  data() {
    return {
      levelList: null
    };
  },
  watch: {
    $route() {
      this.getBreadcrumb();
    }
  },
  created() {
    this.getBreadcrumb();
  },
  methods: {
    toggleSideBar() {
      this.$store.dispatch("ToggleSideBar");
    },
    getBreadcrumb() {
      let matched = this.$route.matched.filter(item => item.name);

      const first = matched[0];
      if (first && first.name !== "dashboard") {
        matched = [{ path: "/dashboard", meta: { title: "首页" } }].concat(
          matched
        );
      }

      this.levelList = matched.filter(
        item => item.meta && item.meta.title && item.meta.breadcrumb !== false
      );
    },
    pathCompile(path) {
      // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
      const { params } = this.$route;
      var toPath = pathToRegexp.compile(path);
      return toPath(params);
    },
    handleLink(item) {
      const { redirect, path } = item;
      if (redirect) {
        this.$router.push(redirect);
        return;
      }
      this.$router.push(this.pathCompile(path));
    }
  }
};
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
.app-breadcrumb {
  /*border-bottom: solid #1ab394 2px;*/
}

.app-breadcrumb.el-breadcrumb {
  display: block;
  font-size: 14px;
  line-height: 30px;
  padding-left: 10px;
  margin-top: 4px;
  width: 100%;

  .no-redirect {
    color: #97a8be;
    cursor: text;
  }
}

.hamburger-container {
  line-height: 30px;
  height: 30px;
  margin-top: 8px;
  margin-left: 8px;
  z-index: 1000;
  /*float: left;*/
  /*padding: 0 10px;*/
  cursor: pointer;
}
</style>
